Stability in pathlength repeatability allows the Pearl to be used in the accurate study of liquids.
FTIR spectroscopy is an ideal analytical technique to characterise new, used and diluted motor oils, as well as various other hydrocarbons. IR spectral analysis can help determine which contaminants are present, as well as what kind of chemical degradation occurs in the oil.
Traditionally, a vertically mounted cell was always the standard method of loading viscous or sticky fluids, which posed many problems including sample introduction and clean up. However, the Pearl liquid transmission accessory is designed to make the IR spectral measurement of
liquids quick, easy and highly repeatable. This note demonstrates the repeatability of a 25 µm pathlength cell, called an Oyster Cell, comprising ZnSe windows.
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